[Bug ld/27659] New: BFD (GNU Binutils for Debian) 2.36.1 internal error, aborting at ../../bfd/elfcode.h:224 in bfd_elf32_swap_symbol_out

[costamagnagianfranco at yahoo dot it]

https://sourceware.org/bugzilla/show_bug.cgi?id=27659

            Bug ID: 27659
           Summary: BFD (GNU Binutils for Debian) 2.36.1 internal error,
                    aborting at ../../bfd/elfcode.h:224 in
                    bfd_elf32_swap_symbol_out
           Product: binutils
           Version: 2.36.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: ld
          Assignee: unassigned at sourceware dot org
          Reporter: costamagnagianfranco at yahoo dot it
  Target Milestone: ---

Created attachment 13333
  --> https://sourceware.org/bugzilla/attachment.cgi?id=13333&action=edit
segfault with 2.35.2

Hello, as said in the title, bfd linker segfaults while trying to link a
clang-12 (but also previous clang versions are affected) on armhf.

Short story, from bug: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=980957

echo '#include <stdio.h>
int main() {
if (1==1) {
  printf("true");
}else{
  printf("false");
  return 42;
}
return 0;}' > foo.c
Testing linking ...
rm foo bar.cc

clang-$VERSION -flto foo.c -o foo
clang: error: unable to execute command: Segmentation fault
clang: error: linker command failed due to signal (use -v to see invocation)
autopkgtest [02:17:39]: ERROR: testbed failure: testbed auxverb failed
with exit code 254


I can say something about this:
a) this happens only on armhf, not on amd64 nor on i386 (not sure about the
others, sorry)

binutils from sid: 2.35.2 + patches from stable branch

1) bfd FAILS with segfault (attached the backtrace)
2) bfd SUCCEED if I copy the .o files from usr/lib to the current directory and
I launch them from here
3) gold SUCCEED



binutils from experimental: 2.36.1 + patches from stable branch
1) bfd FAILS with segfault
2) bfd FAILS if I copy the .o files from usr/lib to the current directory and I
launch them from here
/usr/bin/ld: BFD (GNU Binutils for Debian) 2.36.1 internal error, aborting at
../../bfd/elfcode.h:224 in bfd_elf32_swap_symbol_out
3) gold SUCCEED

So, 2.36.1 seems to be regressing with respect to 2.35.2, but in any case, the
segfault is on the very same place of code.


e.g.:
binutils from experimental

/usr/bin/ld -EL -X --hash-style=both --build-id --eh-frame-hdr -m
armelf_linux_eabi -dynamic-linker /lib/ld-linux-armhf.so.3 -o foo crt1.o crti.o
crtbegin.o -L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../../arm-linux-gnueabihf
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../../../lib
-L/usr/lib/llvm-12/bin/../lib -L/lib/arm-linux-gnueabihf -L/lib/../lib
-L/usr/lib/arm-linux-gnueabihf -L/usr/lib/../lib
-L/usr/lib/arm-linux-gnueabihf/../../lib
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../..
-L/usr/lib/llvm-12/bin/../lib -L/lib -L/usr/lib -plugin ./LLVMgold.so
-plugin-opt=mcpu=generic foo-a6d584.o -lgcc --as-needed -lgcc_s --no-as-needed
-lc -lgcc --as-needed -lgcc_s --no-as-needed crtend.o crtn.o
Segmentation fault

/usr/bin/ld -EL -X --hash-style=both --build-id --eh-frame-hdr -m
armelf_linux_eabi -dynamic-linker /lib/ld-linux-armhf.so.3 -o foo -L. crt1.o
crti.o crtbegin.o -L. -L/usr/lib -plugin ./LLVMgold.so -plugin-opt=mcpu=generic
foo-a6d584.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed
-lgcc_s --no-as-needed crtend.o crtn.o
/usr/bin/ld: BFD (GNU Binutils for Debian) 2.36.1 internal error, aborting at
../../bfd/elfcode.h:224 in bfd_elf32_swap_symbol_out

/usr/bin/ld: Please report this bug.


/usr/bin/ld -EL -X --hash-style=both --build-id --eh-frame-hdr -m
armelf_linux_eabi -dynamic-linker /lib/ld-linux-armhf.so.3 -o foo -L. crt1.o
crti.o crtbegin.o -L. -L/usr/lib -plugin ./LLVMgold.so -plugin-opt=mcpu=generic
foo-a6d584.o -lgcc --as-needed -lgcc_s --no-as-needed -lc -lgcc --as-needed
-lgcc_s --no-as-needed crtend.o crtn.o
/usr/bin/ld: BFD (GNU Binutils for Debian) 2.36.1 internal error, aborting at
../../bfd/elfcode.h:224 in bfd_elf32_swap_symbol_out

/usr/bin/ld: Please report this bug.


/usr/bin/ld.gold -EL -X --hash-style=both --build-id --eh-frame-hdr -m
armelf_linux_eabi -dynamic-linker /lib/ld-linux-armhf.so.3 -o foo crt1.o crti.o
crtbegin.o -L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../../arm-linux-gnueabihf
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../../../lib
-L/usr/lib/llvm-12/bin/../lib -L/lib/arm-linux-gnueabihf -L/lib/../lib
-L/usr/lib/arm-linux-gnueabihf -L/usr/lib/../lib
-L/usr/lib/arm-linux-gnueabihf/../../lib
-L/usr/bin/../lib/gcc/arm-linux-gnueabihf/10/../../..
-L/usr/lib/llvm-12/bin/../lib -L/lib -L/usr/lib -plugin ./LLVMgold.so
-plugin-opt=mcpu=generic foo-a6d584.o -lgcc --as-needed -lgcc_s --no-as-needed
-lc -lgcc --as-needed -lgcc_s --no-as-needed crtend.o crtn.o
echo $?
0

(experimental_armhf-dchroot)locutusofborg@amdahl:~/bar$ /usr/bin/ld -EL -X
--hash-style=both --build-id --eh-frame-hdr -m armelf_linux_eabi
-dynamic-linker /lib/ld-linux-armhf.so.3 -o foo
/usr/lib/arm-linux-gnueabihf/crt1.o /usr/lib/arm-linux-gnueabihf/crti.o
/usr/lib/gcc/arm-linux-gnueabihf/10/crtbegin.o -L. -L/usr/lib -plugin
./LLVMgold.so -plugin-opt=mcpu=generic foo-a6d584.o -lgcc --as-needed -lgcc_s
--no-as-needed -lc -lgcc --as-needed -lgcc_s --no-as-needed
/usr/lib/gcc/arm-linux-gnueabihf/10/crtend.o
/usr/lib/arm-linux-gnueabihf/crtn.o
/usr/bin/ld: BFD (GNU Binutils for Debian) 2.36.1 internal error, aborting at
../../bfd/elfcode.h:224 in bfd_elf32_swap_symbol_out

/usr/bin/ld: Please report this bug.


I'm also attaching the directory with the sources and object files

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